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Connections to be made
From the 18-pin Axxess harness to 16-pin GM harness:
Yellow
Black
Black/Yellow
From the 16-pin GM harness:
Blue
Installing the GMOS-13
GMOS-13
Testing the GMOS-13
OnStar Level Adjustment
This can be set during installation and then left alone. If adjustment is
desired, the user may also tap "Volume Up" or "Down" on the steering wheel
(if equipped) to adjust the OnStar level.
3
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